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kernel/linux-rt-4.4.41/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/bus.h 1.5 KB
5113f6f70   김현기   kernel add
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  #ifndef __NVKM_I2C_BUS_H__
  #define __NVKM_I2C_BUS_H__
  #include "pad.h"
  
  struct nvkm_i2c_bus_func {
  	void (*init)(struct nvkm_i2c_bus *);
  	void (*drive_scl)(struct nvkm_i2c_bus *, int state);
  	void (*drive_sda)(struct nvkm_i2c_bus *, int state);
  	int (*sense_scl)(struct nvkm_i2c_bus *);
  	int (*sense_sda)(struct nvkm_i2c_bus *);
  	int (*xfer)(struct nvkm_i2c_bus *, struct i2c_msg *, int num);
  };
  
  int nvkm_i2c_bus_ctor(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *,
  		      int id, struct nvkm_i2c_bus *);
  int nvkm_i2c_bus_new_(const struct nvkm_i2c_bus_func *, struct nvkm_i2c_pad *,
  		      int id, struct nvkm_i2c_bus **);
  void nvkm_i2c_bus_del(struct nvkm_i2c_bus **);
  void nvkm_i2c_bus_init(struct nvkm_i2c_bus *);
  
  int nvkm_i2c_bit_xfer(struct nvkm_i2c_bus *, struct i2c_msg *, int);
  
  int nv04_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, u8,
  		     struct nvkm_i2c_bus **);
  
  int nv4e_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);
  int nv50_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);
  int gf119_i2c_bus_new(struct nvkm_i2c_pad *, int, u8, struct nvkm_i2c_bus **);
  
  #define BUS_MSG(b,l,f,a...) do {                                               \
  	struct nvkm_i2c_bus *_bus = (b);                                       \
  	nvkm_##l(&_bus->pad->i2c->subdev, "bus %04x: "f"
  ", _bus->id, ##a);   \
  } while(0)
  #define BUS_ERR(b,f,a...) BUS_MSG((b), error, f, ##a)
  #define BUS_DBG(b,f,a...) BUS_MSG((b), debug, f, ##a)
  #define BUS_TRACE(b,f,a...) BUS_MSG((b), trace, f, ##a)
  #endif